Ryobi P131 One+ Portable Dual Chemistry Lithium Ion or NiCad Vehicle Charger DUAL CHEMISTRY: This charger, when plugged into a cars 12 Volt Cigarette Lighter Outlet, can charge both One+ lithium ion batteries or older NiCad models with ease GAUGE YOUR CHARGE: Onboard LEDs on this system tests batteries for defects, informs you that your battery is charging properly and when the charging is completed PROTECTIVE CIRCUITRY: This charger has technology that lets you know when your cars battery is getting low. This charger will turn off once your cars battery gets below a certain charge threshold MOUNTING CAPABILITIES: Keep this charger mounted in larger trucks or cargo vans with the included key hole hanger FUSE: The 12 volt adaptor contains a 250 Volt, 8 Amp, 5 x 20 mm fuse to protect against unexpected power surges